Kell was born in San Diego, California,[1] and attended St. Augustine High School. As a junior, he led St. Augustine to a 29–4 record and a CIF Division III state title. He was ranked the No. 13 shooting guard in his class by Scout.com, and the 79th ranked player overall by ESPN. On October 1, 2013, Kell verbally committed to San Diego State, picking the Aztecs over offers from Vanderbilt, Gonzaga and Oregon.[2]
As a freshman, Kell posted 5.6 points, 2.8 rebounds, and 1.6 assists per game and was named to the Maui Invitational all-tournament team.[3] He helped San Diego State reach the NCAA Tournament as freshmen and beat St. John's in the first round.[4] Kell averaged 12.6 points, 3.7 rebounds and 1.4 assists per game while starting all 38 games as a sophomore. He was named to the First Team All-Mountain West Conference.[5] As a junior, Kell was named to the Third Team All-Mountain West Conference.[6] He was also named (NABC) All-District 17 Second Team for the second straight season. Kell led the Aztecs in points per game (13.2), assists (2.9), steals (1.4) and free-throw percentage (.766) as a junior.[7]
Kell had an injury-shortened senior season, missing time with an ankle injury suffered in a January 27, 2018, loss to UNLV. When he returned, the team went on a nine-game winning streak. Kell scored a career-high 28 points in the 82–75 victory over New Mexico for the Mountain West championship to send the team to the NCAA Tournament. He was named Mountain West tournament MVP.[8] As a senior, he averaged 10.5 points, 4.1 rebounds and 4.1 assists per game.[9]
On July 31, 2018, Kell officially started his professional career by signing with the Bosnian team Igokea. He chose Igokea over offers from nine other European teams.[9] Kell was released a month later due to a knee injury and joined the Moncton MagicofNBL Canada midway through the season. He was named MVP of the Finals as the Magic defeated the St. John's Edge in the clinching game behind 41 points, nine rebounds, six assists and three steals from Kell.[10] In September 2019 he signed with the Eastern Long Lions of the ASEAN Basketball League.[11] In three games, Kell averaged 31.3 points, 8.3 rebounds, 5.0 assists, 1.0 steal and 1.0 block per game. He left the team on January 4, 2020.[12]
On July 14, 2021, Kell signed for Pallacanestro Varese of the Italian Lega Basket Serie A (LBA).[14] He averaged 15.3 points, 4.1 rebounds, 3.1 assists, and 1.2 steals per game.
On January 2, 2022, Kell signed with Olimpia Milano.[15][16] On June 27, 2022, he parted ways with the Italian club.
On October 26, 2020, Kell agreed with the Syrian Basketball Federation to represent the Syria national basketball team in international competitions.[24] He made his debut on November 28, 2020, when he recorded 35 points, 6 rebounds and 6 assists in a game against Qatar in the 2021 FIBA Asia Cup qualification.[25]
